One vertex per element, one color per generator, with an edge from x to x·s.
(11,15)(13,16)(18,24)(20,25)(26,31)(28,32) involution — undirected(1,2)(3,7)(4,5)(6,8)(9,10,12,14)(11,13,15,16)(17,18,23,24)(19,25,21,20)(22,26,30,31)(27,32,29,28)(2,5)(6,7)(9,11)(10,13)(12,15)(14,16)(17,19,23,21)(18,25,24,20)(22,29,30,27)(26,28,31,32)(3,8)(6,7)(9,10)(11,13)(12,14)(15,16)(17,20)(18,19)(21,24)(22,28)(23,25)(26,27)(29,31)(30,32) involution — undirected(1,3)(2,6)(4,8)(5,7)(9,11)(10,13)(12,15)(14,16)(17,21,23,19)(18,25,24,20)(22,29,30,27)(26,32,31,28)(1,2)(3,6)(4,5)(7,8)(17,22)(18,26)(19,27)(20,28)(21,29)(23,30)(24,31)(25,32) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.